Difference Between Erythrocytes and Leucocytes (RBC vs WBC)

Erythrocytes or Red Blood Corpuscles (RBC):Erythrocytes are highly specialized cells. The mature human erythrocytes is a circular, biconcave, non nucleated disc. It contains homogeneous protoplasm. It is 7-8 μm in diameter, 2-2.5 μm thick at periphery and 1-2 μm thick at the centre. Under the microscope a single red blood cell seems to have a … Read more

What are the bacteria found in milk and milk products?

Types of bacteria found in milk and milk products are:The acid producing bacteria: These bacteria are responsible for conversion of lactose to lactic acid. Bacteria included in this group are: Streptococcus lactis, Streptococcus cremoris, Lactoba-cillus acidophilus, Lactobacillus bulgaricus. Aroma producing bacteria: These bacteria are responsible for the production of desirable aroma and flavor in milk … Read more

Bacterial Pathogenicity Factors – Bacteriology – Medical Microbiology

SOME BACTERIAL PATHOGENICITY FACTORSInfection by a pathogen depends upon some factors :(a) Tissues Preference: Some pathogens prefer particular tissues of the host body as site of infection. For example malarial parasites prefer human blood cells at certain stage of their life cycle. Some pathogens prefer lungs tissue, others prefer kidney, intestine, skin etc. (b) Hypersensitivity: … Read more

What is Cancer? Causes, Types, Treatment & Signs

What is Cancer? Cancer Causes Unlike most other diseases cancer is not infectious and hence not communicable. Actual cause of cancer could not be identified despite serious effort by researchers. No organism has been found to be associated with the disease till to-day. Cancer is referred to as an ailment characterized by an unrestrained growth … Read more

How to prevent Spread of Infectious Diseases

HOW TO PREVENT SPREAD OF INFECTIOUS DISEASES1. Isolation. A person suffering from communicable disease should be isolated from other persons so that others do not catch infection. 2. Vaccination. People should be vaccinated against possible infection particularly during epidemic. 3. Sanitation. Proper sanitation should be observed. All waste materials and garbage should be disposed properly. … Read more

Amoebiasis: Causes, Symptoms, Transmission & Treatment

Amoebiasis Symptoms: The symptoms include mild dysentery alternating with constipation. In severe cases of dysentery, mucus and blood is discharged with stool. If the patient is not treated in the early stage, the disease may be prolonged and the condition may further deteriotate. Even the organism causing the disease may enter the lungs and the … Read more

What is Hepatitis? Types, Causes, Symptoms & Treatment

What is Hepatitis? Hepatitis is inflammation of liver caused by some viruses, drugs, chemicals and other substances.But most common form of hepatitis is the viral hepatitis. There are two types of hepatitis-Hepatitis A and Hepatitis B. Hepatitis A is a infectious form of viral diseases of mild nature. It is also called epidemic hepatitis or … Read more

What is Leprosy? Causes, Symptoms & Treatment

What is Leprosy? Leprosy is caused by a bacterium called Mycobacterium leprae. The disease affects skin and peripheral nervous system. The infected areas become benumbed. There are other symptoms like ulceration, nodulation, deformities of finger and other body parts. The disease is transmitted only through prolonged contact with affected person. Childe of leper, if isolated … Read more

Typhoid Fever Causes, Symptoms , Treatment and Vaccine

Typhoid FeverThe causative bacterium of typhoid is Salmonella typhi.The symptoms of the disease are continuous fever, slow pulse, abdominal tenderness and rose coloured eruption. The bacteria on disintegration release a kind of endotoxin which affect the digestive system. As the typhoid is a acute infection of intestine the germs escape through intestinal discharge. Some persons … Read more

Tuberculosis (TB): Symptoms, Causes,Transmission & Control

What is Tuberculosis? Tuberculosis SymptomsIt is a bacterial disease and is responsible for loss of many human lives particularly in under-developed countries. Not only man, allwarm-blooded animals may suffer from the disease. The organism causing this disease was first isolated and identified by Robert Koch in 1882. Symptom: The early symptoms are the feeling of weakness … Read more